Where is HO2S Heater Resistance Bank 1 Sensor 1

These codes refer to 3 different issues.
P0053 - HO2S Heater resistance Bank 1, sensor 1.
P0054 - HO2S Heater Resistance Bank 1 Sensor 2
P0324 - Knock Sensor (KS) Module Performance.
P0326 - Knock Sensor Circuit Excessive Spark Retard.
P0597 - Thermostat Heater Control Circuit Open.

You need to get a good mechanic to look at this. The HO2S codes refer to both of the 'O2' sensors in the exhaust, (mounted before and after the Catalytic Converter). They monitor the exhaust gas mixture to correct fuel mixture to the engine to control exhaust gas pollution levels. If one is detecting a wrong reading, the fuel/air mix is automatically adjust.
The Knock sensors detect vibration from when the fuel is burning. If the sensor detects a 'bang' when it shouldn't be there it alerts the ECM (cars brain) to adjust the timing sequence.
Wrong readings cause the ECU to adjust the fuel/air mixture to the wrong setting causing rough engine running.
The thermostat code is for the wiring to the coolant thermostat sensor.

These code's don't have anything to do with ignition switch . What engine does it have ?
Engine Controls - 4.3L , 4.8L, 5.3L, and 6.0L
• DTC P0053 for HO2S bank 1 sensor 1
• DTC P0054 for HO2S bank 1 sensor 2
• DTC P0059 for HO2S bank 2 sensor 1
• DTC P0060 for HO2S bank 2 sensor 2
The heated oxygen sensor (HO2S) must reach operating temperature to provide an accurate voltage signal. A heating element inside the HO2S minimizes the time required for the sensor to reach operating temperature. Voltage is provided to the heater by the ignition 1 voltage circuit through a fuse. With the engine running, ground is provided to the heater by the HO2S heater low control circuit, through a low side driver within the powertrain control module (PCM). The PCM commands the heater ON or OFF to maintain a specific HO2S operating temperature range. The PCM determines the temperature by measuring the current flow through the heater. When the heater is in the ON state, the PCM will pulse the heater OFF for a duration of 50 ms, once per second. The PCM calculates the heater resistance on a cold start. This diagnostic will only run once per ignition cycle. If the PCM detects that the heater calculated resistance is not within the expected range, the following DTCs will set:
With all these code's ,i would check O2 sensor's heater circuit power supply . Fuse blown .
O2 A & O2 B fuse's under hood fuse box , then check for melted wires on exhaust manifold or exhaust pipe .

O2 sensor's don't have a fuse , except for the heater circuit. PCM - engine computer supply's five volt's , signal return and ground . All are connected at the PCM . The fuse's you are calling O2 sensor fuse's are for the heater circuit . The PCM controls the O2 heater circuit by pulse width modulation ,do you know what that is .There is a transistor inside the PCM that toggles the ground on an off to control the heater circuit . Unless you know automotive electrical circuit testing an testing PCM input's an outputs ,your best bet , take your vehicle to a qualified repair shop .

Pulse width modulation Pulse width modulation

• DTC P0053 HO2S Heater Resistance Bank 1 Sensor 1
The heated oxygen sensor (HO2S) must reach operating temperature to provide an accurate voltage signal. A heating element inside the HO2S minimizes the time required for the sensor to reach operating temperature. Voltage is provided to the heater by the ignition 1 voltage circuit through a fuse. With the engine running, ground is provided to the heater by the HO2S heater low control circuit, through a low side driver within the powertrain control module (PCM). The PCM commands the heater ON or OFF to maintain a specific HO2S operating temperature range. The PCM determines the temperature by measuring the current flow through the heater. When the heater is in the ON state, the PCM will pulse the heater OFF for a duration of 50 ms, once per second. When the heater is in the OFF state, the PCM will pulse the heater ON for a duration of 50 ms, once per second. The PCM calculates the heater resistance on a cold start. This diagnostic will only run once per ignition cycle. If the PCM detects that the heater calculated resistance is not within an expected range, DTC P0053 sets for HO2S bank 1 sensor 1, or DTC P0059 sets for HO2S bank 2 sensor 1.

Turn ON the ignition, with the engine OFF.
Command the HO2S heaters ON with a scan tool.
Wait 15 seconds to allow the HO2S heater current to stabilize.
Observe the affected HO2S heater current parameter with a scan tool.
Is the HO2S heater current parameter within the specified range?
0.25-3.125 A
Inspect the O2A fuse.
Is the O2A fuse open?

DTC P0135 HO2S Heater Performance Bank 1 Sensor 1

Conditions for Setting the DTC
• The PCM detects that the affected HO2S Heater current parameter is greater than 3.125 amps or less than 0.25 amps.
• The above condition is met for 10 seconds.

Could be the Heater inside is open or a fuse problem , check fuse first , if you have not already done so.
Bank 1 sensor 1 is located on left side of the engine in the exhaust pipe before crossover

DTC P0053 HO2S Heater Resistance Bank 1 Sensor 1
• DTC P0135 HO2S Heater Performance Bank 1 Sensor 1
Important: Whenever the heated oxygen sensor (HO2S) heaters are commanded ON with a scan tool, they will continue to be pulsed ON once per second until the ignition is turned OFF for 30 seconds.
Turn ON the ignition, with the engine OFF.
Command the HO2S heaters ON with a scan tool.
Wait 15 seconds to allow the HO2S heater current to stabilize.
Observe the affected HO2S Heater Current parameter with a scan tool.
Is the HO2S Heater Current parameter within the specified range?
0.25-1.375 A

A blown O2 fuse or a short or resistance in the wiring can set this code. A ECM/PCM internal fault can also be the problem.

Hi,

Code explanations as follows:

P0030 = HO2S Heater Control Circuit (Bank 1 Sensor 1)
P0053 = HO2S Heater Resistance (Bank 1, Sensor 1)
P0054 = HO2S Heater Resistance (Bank 1, Sensor 2)
P0134 = 02 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)
P0302 = Cylinder 2 Misfire Detected


Cheers,




"If this has helped you, please rate this solution"

Im guessing you mean p0053 which is an oxygen sensor code P0053 HO2S Heater Resistance (Bank 1, Sensor 1)

here are all poss causes of check engine light.
Generic Trouble Codes

P0001-P0099 – Fuel and Air Metering and Auxiliary Emission Controls
Code Description
P0001 Fuel Volume Regulator Control Circuit/Open
P0002 Fuel Volume Regulator Control Circuit Range/Performance
P0003 Fuel Volume Regulator Control Circuit Low
P0004 Fuel Volume Regulator Control Circuit High
P0005 Fuel Shutoff Valve Control Circuit/Open
P0006 Fuel Shutoff Valve Control Circuit Low
P0007 Fuel Shutoff Valve Control Circuit High
P0008 Engine Position System Performance (Bank 1)
P0009 Engine Position System Performance (Bank 2)
P0010 A Camshaft Position Actuator Circuit (Bank 1)
P0011 A Camshaft Position - Timing Over - Advanced or System Performance (Bank 1)
P0012 A Camshaft Position - Timing Over - Retarded (Bank 1)
P0013 B Camshaft Position - Actuator Circuit (Bank 1)
P0014 B Camshaft Position - Timing Over - Advanced or System Performance (Bank 1)
P0015 B Camshaft Position - Timing Over - Retarded (Bank 1)
P0016 Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
P0017 Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)
P0018 Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)
P0019 Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor B)
P0020 A Camshaft Position Actuator Circuit (Bank 2)
P0021 A Camshaft Position - Timing Over - Advanced or System Performance (Bank 2)
P0022 A Camshaft Position - Timing Over-Retarded (Bank 2)
P0023 B Camshaft Position - Actuator Circuit (Bank 2)
P0024 B Camshaft Position - Timing Over - Advanced or System Performance (Bank 2)
P0025 B Camshaft Position - Timing Over - Retarded (Bank 2)
P0026 Intake Valve Control Solenoid Circuit Range/Performance (Bank 1)
P0027 Exhaust Valve Control Solenoid Circuit Range/Performance (Bank 1)
P0028 Intake Valve Control Solenoid Circuit Range/Performance (Bank 2)
P0029 Exhaust Valve Control Solenoid Circuit Range/Performance (Bank 2)
P0030 HO2S Heater Control Circuit (Bank 1 Sensor 1)
P0031 HO2S Heater Control Circuit Low (Bank 1 Sensor 1)
P0032 HO2S Heater Control Circuit High (Bank 1 Sensor 1)
P0033 Turbo Charger Bypass Valve Control Circuit
P0034 Turbo Charger Bypass Valve Control Circuit Low
P0035 Turbo Charger Bypass Valve Control Circuit High
P0036 HO2S Heater Control Circuit (Bank 1 Sensor 2)
P0037 HO2S Heater Control Circuit Low (Bank 1 Sensor 2)
P0038 HO2S Heater Control Circuit High (Bank 1 Sensor 2)
P0039 Turbo/Super Charger Bypass Valve Control Circuit Range/Performance
P0040 O2 Sensor Signals Swapped Bank 1 Sensor 1/ Bank 2 Sensor 1
P0041 O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2
P0042 HO2S Heater Control Circuit (Bank 1 Sensor 3)
P0043 HO2S Heater Control Circuit Low (Bank 1 Sensor 3)
P0044 HO2S Heater Control Circuit High (Bank 1 Sensor 3)
P0045 Turbo/Super Charger Boost Control Solenoid Circuit/Open
P0046 Turbo/Super Charger Boost Control Solenoid Circuit Range/Performance
P0047 Turbo/Super Charger Boost Control Solenoid Circuit Low
P0048 Turbo/Super Charger Boost Control Solenoid Circuit High
P0049 Turbo/Super Charger Turbine Overspeed
P0050 HO2S Heater Control Circuit (Bank 2 Sensor 1)
P0051 HO2S Heater Control Circuit Low (Bank 2 Sensor 1)
P0052 HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0053 HO2S Heater Resistance (Bank 1 Sensor 1)
P0054 HO2S Heater Resistance (Bank 1 Sensor 2)
P0055 HO2S Heater Resistance (Bank 1 Sensor 3)
P0056 HO2S Heater Control Circuit (Bank 2 Sensor 2)
P0057 HO2S Heater Control Circuit Low (Bank 2 Sensor 2)
P0058 HO2S Heater Control Circuit High (Bank 2 Sensor 2)
P0059 HO2S Heater Resistance (Bank 2 Sensor 1)
P0060 HO2S Heater Resistance (Bank 2 Sensor 2)
P0061 HO2S Heater Resistance (Bank 2 Sensor 3)
P0062 HO2S Heater Control Circuit (Bank 2 Sensor 3)
P0063 HO2S Heater Control Circuit Low (Bank 2 Sensor 3)
P0064 HO2S Heater Control Circuit High (Bank 2 Sensor 3)
P0065 Air Assisted Injector Control Range/Performance
P0066 Air Assisted Injector Control Circuit or Circuit Low
P0067 Air Assisted Injector Control Circuit High
P0068 MAP/MAF - Throttle Position Correlation
P0069 Manifold Absolute Pressure - Barometric Pressure Correlation
P0070 Ambient Air Temperature Sensor Circuit
P0071 Ambient Air Temperature Sensor Range/Performance
P0072 Ambient Air Temperature Sensor Circuit Low
P0073 Ambient Air Temperature Sensor Circuit High
P0074 Ambient Air Temperature Sensor Circuit Intermittent
P0075 Intake Valve Control Solenoid Circuit (Bank 1)
P0076 Intake Valve Control Solenoid Circuit Low (Bank 1)
P0077 Intake Valve Control Solenoid Circuit High (Bank 1)
P0078 Exhaust Valve Control Solenoid Circuit (Bank 1)
P0079 Exhaust Valve Control Solenoid Circuit Low (Bank 1)
P0080 Exhaust Valve Control Solenoid Circuit High (Bank 1)
P0081 Intake Valve Control Solenoid Circuit (Bank 2)
P0082 Intake Valve Control Solenoid Circuit Low (Bank 2)
P0083 Intake Valve Control Solenoid Circuit High (Bank 2)
P0084 Exhaust Valve Control Solenoid Circuit (Bank 2)
P0085 Exhaust Valve Control Solenoid Circuit Low (Bank 2)
P0086 Exhaust Valve Control Solenoid Circuit High (Bank 2)
P0087 Fuel Rail/System Pressure - Too Low
P0088 Fuel Rail/System Pressure - Too High
P0089 Fuel Pressure Regulator 1 Performance
P0090 Fuel Pressure Regulator 1 Control Circuit
P0091 Fuel Pressure Regulator 1 Control Circuit Low
P0092 Fuel Pressure Regulator 1 Control Circuit High
P0093 Fuel System Leak Detected - Large Leak
P0094 Fuel System Leak Detected - Small Leak
P0095 Intake Air Temperature Sensor 2 Circuit
P0096 Intake Air Temperature Sensor 2 Circuit Range/Performance
P0097 Intake Air Temperature Sensor 2 Circuit Low
P0098 Intake Air Temperature Sensor 2 Circuit High
P0099 Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic

P0016 - Crankshaft Position Camshaft Position Correlation Bank 1 Sensor A
P0030 - Heated Oxygen Sensor (H02S) Heater Control Circuit Bank 1 Sensor 1
P0031 - Heated Oxygen Sensor (HO2S) Heater Circuit Low Voltage Bank 1 Sensor 1
P0032 - Heated Oxygen Sensor (HO2S) Heater Circuit High Voltage Bank 1 Sensor 1
P0036 - Heated Oxygen Sensor (HO2S) Heater Control Circuit Bank 1 Sensor 2
P0037 - Heated Oxygen Sensor (HO2S) Heater Circuit Low Voltage Bank 1 Sensor 2
P0038 - Heated Oxygen Sensor (HO2S) Heater Circuit High Voltage Bank 1 Sensor 2
P0050 - Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 1
P0051 - Heated Oxygen Sensor (HO2S) Heater Circuit Low Voltage Bank 2 Sensor 1
P0052 - Heated Oxygen Sensor (HO2S) Heater Circuit High Voltage Bank 2 Sensor 1
P0053 - HO2S Heater Resistance Bank 1 Sensor 1 (PCM)
P0054 - HO2S Heater Resistance Bank 1 Sensor 2 (PCM)
P0056 - Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 2
P0057 - Heated Oxygen Sensor (HO2S) Heater Circuit Low Voltage Bank 2 Sensor 2
P0058 - Heated Oxygen Sensor (HO2S) Heater Circuit High Voltage Bank 2 Sensor 2
P0068 - Throttle Body Airflow Performance (PCM)
P0100 - MAF Sensor Circuit Insufficient Activity